Oil-press



M. B. GREEN.

OIL PRESS.

APPLICATION FILED MAR. 6. 1920.

1,348,870, Patented Aug. 10, 1920.

anotan, I

UNITED STATES.

,PATE

NT OFFICE.

Y OIL-PRESS.

Specification of Letters Patent.

Patented Aug. 10, 1920.

Application led March 6, 1920. Serial No. 363,755.

T0 all whom t may concern.'

' Beit known that I, MICHAEL B. GREEN, a citizen of the United States, and resident of Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Oil-Presses, of which the following is a specification, refer ence being had therein to the accompanying drawing.

The general object'of this invention is to improve oil presses commonly used and especially to provide novel mat supports to be superposedv and moved vertically in the press frame. Neither the frame nor the means for applying pressing power is shown, since substantially the common construction may be employed.

It has been common to form the body of a mat support of parallel spaced bars upon which the mat or bag containing oil-yielding material is laid and subjected to very heavy pressure, while its warp threads are parallel to the spaced bars between which the expressed oil passes downward.V To allow oil,

at theV outset, .to escape rapidly, the spaces between the bars are comparatively wide. The woof threads which alone cross these passages are subjected to such strain over,

or in, the passages that they are oftenV rup-` tured, especially if used repeatedly as they must be, practically, to save expense. Some lessening of this evil has been brought about by narrowing the spaces between the bars and at the same time cutting in the sides of the bars many narrow slots perpendicular to their axes. The use of initially separate bars hasY advantages over forming channels in a continuous metal plate, and when a plate is used it is advisable to make it thin and obtain the indispensable strength by bars below the plate.

This invention involves the use of bars without a plate above them and these bars are placed in lateral contact, rigidly united, and provided with lateral oil channels into which vertical oblique slots open.

In the accompanying drawings,

Figure 1 is a side sectional elevation of one of the mat supports with parts of another above. f

Fig. 2 is a plan view of a part of the same structure.

Fig. 3 isa detail view showing in bottom plan parts similarly lettered in other figures.

Fig. 4 is a detail view ofl a device for safely detachingthe mat from the next superposed support.

In these figures, 10 represents a bed inember of the lower support, 11 a set of parallel bars which are rigidly held in contact by a rivet, or bolt, 124 and rest upon said bed. The outer bars have cam-like outer faces 11', below mentioned, and the intermediate bars, duplicates of each other, have'lateral races shown as plane except for groovesV or channels 13 therein extending-from end to end of the bars and gradually falling slightly. The grooves in adjacent bars register so as to form a single symmetrical slightly inclined channel. Eachbar has in its upper side many parallel very narrow vertical slots 14 preferably inclined at an angle of 150 and extending to the medial line of the bar and downwardly to intersect the corresponding channel '13, and the channels on the meeting sides of adjacent bars are alined, while the slots on the next pair although parallel to those of the adjacent pairs are in lines midway between the others as shown.

The mats lie upon the supports just described and between curved steel plates 15 extending yfrom end to end of the supports Vand having their upper edges loosely engaged in shallow slots 16 in the bed 10 of the next support above, the plates being held up by bolts 17 passing through slots 18 in lugs 19 upon the plates 15 and working in heavy brackets y2O bolted to the bed 10 above. The plates are pressed inward by springs 21, adjusted by bolts 22 working lugs :onthe brackets 20. 'Ihese curved plates thus primarily pressed against the faces 11 of the outer bars 11 follow those faces as the mats are compressed until the limit of compression is nearly reached when their lower edges are pushed outward by the outwardly turning faces 23 of the bars, loosening them from the thin oil cake, opening a narrow channel for the escape of oil, and allowing the supports to move freely to initial position, so far as these plates are concerned.

It is found that the mats now compressed to thin and very dense cakes adhere somewhat strongly to the plates 10 above, and it has been usual to detach them by means of a thin bar having a chisel-like end. In thus detaching them the fabric is often torn, even when care is exercised by employees.

To remedy this evilthe lower side of each base 10, l is channeled to receive a thin bar 26 attached to a row of plungers'27 hav'- 31; Then the mat isfto be loosened from the bed l0 a flat metal bai' is forced into fthe slots 29,v 31 Vand as it passes over the heads 28 the thin bar 26 .is forced directly vdownward pulling the mat from thebase.

It is to be observed that the construction set forth combines the advantages of oblique slots, primarily independent bars, and numerous very short and narrow slots.

"ilhat I claim is: n l. In an oil press, a mat erally contacting at their upper sides in the same plane and havingitheir meeting faces provided ywith registering grooves forming Voily passages from end to. end of the bars,

each bar having 'iniits upper side narrow oblique grooves extending downward onA eachvr side into said. passages, and. from the .lateral margins of thebars approxinfiatelyv Y being adapted to swing the plates outward totheirrmedial lines. Y ,Y

.Y 2; In an oilY press, the combination with mat supports tobe superposed, ofplates pivotally engaged with a support above and fitting respectivelyV against Vopposite lateral 'y faces of thenext support below to support the margins of the intermediate mat, and

meanswhereby. the plates are moved out- V,ward fromV the vmats as theliinit ofcompres-VA sion is reached..

B.` Inan oil press, theco'mbination with a d' plane matsupport having arba'r extending across its lower face, in position to make contact with a mat of the next lower suppoi-.tin the pressframaand means for at f will-forcing' this bar downward after the completion oflcompression to detach the mat from the support above.

portl to act as one of a series of similar vertiv support having Vits body made up of rigidly united. bars lat.-

.cally movable supports.'superposedi in a two opposite sides the spaces iii which theV mats Vlie, each plate being ivotallyengaged with the siinnortV above and'spring pressed against the lateral walls'of the support below, and means automaticallymoving each plate outward as theV supports near the limit of their pressingv movement.

V6. The combination withtwoV spaced superposed mat'supports and marginal plates llaterallyclosing th'espaee between the supports and having their upper margins pivotally 1engaging the upper support, springs normally pressingY thelower sides of said plates against the corresponding sides of the next lower support, Vsaid corresponding sides when they descend beyond'aY certain point.

'7. The combinationY with mat supports to be superposed in 'a press withY mats intervening and *having the lower members. provided above-and below with registering shallow grooves extendingfrom side to side, `of a plate normally filling the lower'g'roove and provided with vertically lsliding Vstuds eX- tending in to the upper groove and having upwardly convexupper ends, andfspri'ngs resisting downward movement of the studs; whereby a suitablelto'ol or bar being forced `into the upper groove, depresses thestuds vsuccessively and bytle'pressingztheir plateV forces the-mat away from the support above.

, In testimony whereof lirhereunto affix my A signature. Y 4L. The combination with a plane matsup-V 7 1 Y 'MICHAEL B. GREEN. 1 

